Improvement in compositions for varnishing leather



UNITED STATES PATENT OFFICE.

O. S. BOYDEN AND M. G. FREDERICK, OF NEWARK, NEW JERSEY.

IMPROVEMENT lN COMPOSITIONS FOR VARNISHING LEATHER.

Specification forming part of Letters Patent No. 20.320, dated May 25, 1858.

To all whom it may concern.-

Be it known that we, OBADIAH S. BOYDEN and MICHAEL O. FREDERICK, of Newark, in the county of Essex and State of New Jersey, have invented a new and useful improvement in the compounds employed in the manufacture of glazed, japanned, and painted leather, silk, cloth, and paper; and we do hereby declare that the following is a full, clear, and exact description of the same.

The compound commonly employed for the first or first and second coats in the manufacture of glazed and japanned leather or cloth is made by boiling a certain quantity of umber in linseed-oil and adding a quantity of lampblack or other coloring-matter, with a quantity of camphene or spirits of turpentine about equal to or about one and a half (1%) time as much as that of linseed-oil.

Now, our invention consists in the substitution, either wholly or in part, for the camphene or spirits. of turpentine in this compound, of apaste made byboiling flaxseed-either whole or after the oil has been expressed, and eitherground into meal or ungroundin water till its glutinous property is extracted. The use of this paste as a substitute for the camphene or spirits or turpentine not only reduces the cost of the compound, but renders the goods more pliable and less liable to crack.

To make the paste, we use about one (1) pound of fiaxseed to every two (2) gallons of water, and boil till all the glutinous property has been exhausted from the seed. Of this paste we use in the compound a quantity about equal to that of the linseed-oil, without any camphene or spirits of turpentine.

The proportions of oil, umber, and lampblack or other coloring-matter for glazed 0r japanned leather, cloth, silk, and paper are varied by different manufacturers. We, however, generally use one (1) pound of umber (raw or burnt) for every twelve (12) gallons of linseed-oil, and boil it for from five (5) to seven (7) hours, and when cool add two (2) pounds of lamp-black for every gallon of oil and the above-specified quantity of paste, and stir the whole together till well mixed when the compound is fit for use.

,WVhen the compound is to be of any other color than black, we employ the usual coloring-matters in place of lamp -black, and in about the usual proportions.

When the paste is made by boiling the whole seed, we strain or pour the paste from the seed; but if it is made from meal we do not strain it or separate the seed, but put all into the compound.

The flaXseed-paste may be used with a certain quantity of camphene or spirits of turpentine, the quantity being about in proportion to the reduction of the usual quantity of camphene or spirits of turpentine; but we consider it preferable to dispense entirely with the latter.

The use of the paste need not be confined to the first or first and second coats of the compound, though its use will not be attended with the same advantagein the latter coats.

The paste may be used as a substitute for camphene or spirits of turpentine in the compound employed in the manufacture of floor oil-cloth with the same advantage as in those employed in the manufacture of glazed or japanned leather, cloth, silk, and paper. We find, also, by experiment that the paste made by boiling ground fiaxseed which has not had the oil expressed may be used with lampblack or other coloring-matter without the addition of the boiled oil and umber as the first coat.

What we claim as our invention, and desire to secure by Letters Patent, is

The employment, in the compounds used in the manufacture of glazed, j apanned, or painted leather, cloth, silk, and paper, either wholly or in part as asubstitute for camphcne or spirits of turpentine, of a paste made of the glutinous properties of flaxseed, substantially as and for the purpose set forth.

OBADIAH S. BOYDEN. M. O. FREDERICK.

Witnesses:

V. TUSOH, W. HAUFF. 

